<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>事件处理</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>

</head>

<body>
    <div id="app">
        <button v-on:click="greet">Greet</button>
    </div>

    <script>
        var app = new Vue(
            {
                el: "#app",
                data: {
                    message: "this is a demo"
                },

                methods: {
                    greet: function () {
                        alert(this.message)
                    }
                }
            }
        )
    </script>
</body>

</html>